v.sort.points

Sorts a vector point map according to a numeric column

v.sort.points [-r] input=name layer=string output=name column=name [--overwrite] [--verbose] [--quiet] [--qq] [--ui]

Example:

v.sort.points input=name layer=1 output=name column=name

grass.script.run_command("v.sort.points", input, layer="1", output, column, flags=None, overwrite=False, verbose=False, quiet=False, superquiet=False)

Example:

gs.run_command("v.sort.points", input="name", layer="1", output="name", column="name")

Parameters

Command linePython (grass.script)

input=name [required]
    Name of input vector map
    Or data source for direct OGR access
layer=string [required]
    Layer number or name
    Vector features can have category values in different layers. This number determines which layer to use. When used with direct OGR access this is the layer name.
    Default: 1
output=name [required]
    Name for output vector map
column=name [required]
    Name of attribute column used for sorting
-r
    do not reverse sort
--overwrite
    Allow output files to overwrite existing files
--help
    Print usage summary
--verbose
    Verbose module output
--quiet
    Quiet module output
--qq
    Very quiet module output
--ui
    Force launching GUI dialog

input : str, required
    Name of input vector map
    Or data source for direct OGR access
    Used as: input, vector, name
layer : str, required
    Layer number or name
    Vector features can have category values in different layers. This number determines which layer to use. When used with direct OGR access this is the layer name.
    Used as: input, layer
    Default: 1
output : str, required
    Name for output vector map
    Used as: output, vector, name
column : str, required
    Name of attribute column used for sorting
    Used as: input, dbcolumn, name
flags : str, optional
    Allowed values: r
    r
        do not reverse sort
overwrite: bool, optional
    Allow output files to overwrite existing files
    Default: False
verbose: bool, optional
    Verbose module output
    Default: False
quiet: bool, optional
    Quiet module output
    Default: False
superquiet: bool, optional
    Very quiet module output
    Default: False

DESCRIPTION

v.sort.points takes an input point vector map, sorts the points by the values in the sort column and then writes the result to the output map.

This is useful to display symbols in sizes proportionate to that same column without having big symbols hide small symbols.

By setting the r flag, the user can also chose to reverse the sorting order putting points with the highest value in front.

EXAMPLE

d.vect -r map=schools_wake@PERMANENT type=point,line,boundary,area,face width=1 icon=basic/circle size=1 size_column=CAPACITYTO
v.sort.points input=schools_wake output=sorted_schools column=CAPACITYTO
d.vect -r map=sorted_schools@user1 type=point,line,boundary,area,face width=1 icon=basic/circle size=1 size_column=CAPACITYTO

AUTHOR

Moritz Lennert

SOURCE CODE

Available at: v.sort.points source code (history)
Latest change: Thursday Feb 20 13:02:26 2025 in commit 53de819